RADR 2209 Spring 2023 Unit 2 review 1

The uppermost collimator shutter functions to eliminate

• off-focus radiation

• leakage radiation

• scatter radiation

• primary radiation

How does filtration affect the primary beam?

1. It increases the average energy of the primary beam

2. It decreases the average energy of the primary beam

3. It increases the intensity of the primary beam

4. It decreases primary beam quality

5. It decreases patient dose

6. It makes the useful beam more penetrating

• 1 only

• 1, 3, & 6 only

• 1, 5, and 6 only

• All answers are correct

The interaction which involves ejecting a k shell electron

• Compton Scatter

• Bremsstrahlung

• Characteristic

• Space Charge

Which of the following is most closely related to Characteristic interactions

• Low kV

• High kV

• Low mA

• High mA

The ability to do work

• Momentum

• Potential

• Strength

• Energy

The movement of electrons

• Thermal energy

• Electrical energy

• Nuclear energy

• Potential energy

Energy required to remove an electron from an atom

• Binding energy

• Centrifugal energy

• Centripetal energy

• Bonding energy

Gives the number of nucleons in an atom

• EMU

• ADU

• AMU

• AAU

Which shell can have up to 50 electrons

• K

• M

• O

• Q

Can occur at any energy level

• Compton

• Characteristic

• Photoelectric

• Bremsstrahlung